The nucleic acids like DNA and RNA are composed of nitrogenous bases, sugar and phosphorous. These nitrogenous bases are adenine (A), guanine (G), thymine (T), and cytosine (C). These nitrogenous bases have hydrogen bond between opposing DNA strands to form the rungs of the "twisted ladder" or double helix of DNA or a biological catalyst that is found in the nucleotides. Adenine is always paired with thymine, and guanine is always paired with cytosine. These are known as base pairs. Uracil is only present in RNA, replacing thymine. Pyrimidines include uracil, thymine, cytosine. They have a single ring structure. Purines include adenine and guanine. They have a double ring structure.
So, the correct answer is option C.
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Similar Questions
Q1
A codon consists of 3 bases and there are 4 different kinds of bases in a nucleic acid altogether. How many codons will be there?
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Q2
Nucleic acids are the polymers of (a) nucleosides (b) nucleotides (c) bases (d) sugars
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Q3
How many kinds of nitrogen bases are found in a DNA?
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Q4
Polynucleotides are called nucleic acids. Each nucleotide is made up of three parts, i.e, a pentose sugar, a heterocyclic nitrogenous base and phosphoric acid. Depending upon the nature of sugar whether, ribose or deoxyribose, nucleic acids are called RNA and DNA respectively. In all, there are five nitrogenous bases, two of which are purines while the remaining three are pyrimidines. Out of these five bases, each type of nucleic acid has four of them.
Which of the following sets of bases is present in both DNA and RNA?
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Q5
Polynucleotides are called nucleic acids. Each nucleotide is made up of three parts, i.e, a pentose sugar, a heterocyclic nitrogenous base and phosphoric acid. Depending upon the nature of sugar whether, ribose or deoxyribose, nucleic acids are called RNA and DNA respectively. In all, there are five nitrogenous bases, two of which are purines while the remaining three are pyrimidines. Out of these five bases, each type of nucleic acid has four of them.
Which base is only found in the nucleotide of RNA?